Não informado. (1961). Civil engineering in Japan. Japan Society of Civil Engineers.
Chicago-referens (17:e uppl.)Não informado. Civil Engineering in Japan. Tokyo: Japan Society of Civil Engineers, 1961.
MLA-referens (8:e uppl.)Não informado. Civil Engineering in Japan. Japan Society of Civil Engineers, 1961.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.